How to Cache a URL and load while offline?

Question

This is my code. As I am new to andorid, I have no idea what to do. This is what I have tried. Do I need to have some method to save cache to storage also?


public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        String url="https://www.facebook.com";

        WebView webView = (WebView) findViewById(R.id.webview_new);
        webView.setWebViewClient(new WebViewClient());

        if(!isNetworkAvailable()){
            webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
        }
        webView.loadUrl(url);
    }



    private boolean isNetworkAvailable() {
        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService( CONNECTIVITY_SERVICE );
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        return activeNetworkInfo != null && activeNetworkInfo.isConnected();
    }
}

this might help you,take a look stackoverflow.com/questions/35237197/… — seon
– seon, Commented Jul 12, 2017 at 9:50

Johny · Accepted Answer · 2017-07-12 09:21:48Z

1

You can add this cache() before isNetworkAvailable() so you can load the URL offline.

private void cache() {
        webView.getSettings().setAppCachePath(getApplicationContext().getCacheDir().getAbsolutePath());
        webView.getSettings().setAppCacheEnabled(true);
        webView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT); // load online by default
        if (!isNetworkAvailable()) { // loading offline
            webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
        }
    }

answered Jul 12, 2017 at 9:21

Johny

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1 Comment

Thecarisma Over a year ago

@Xantosh some website has a no-cache declared which means some webpages cant be cached.

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